JPH02164394A - Washing machine with function of dewatering - Google Patents

Abstract

PURPOSE:To eliminate necessity for receiving water with an outer shell or outer box and suppress the manufacturing cost by reserving the water to be discharged from the trough at the time of dewatering in a pocket alongside the tapered portion of the trough. CONSTITUTION:Water is stored in a trough 9, and a diaphragm 27 having received the weight of the water expands gradually. In a water level sensor 23 a core 24 fitted to the diaphragm 27 approaches a sensing coil 25 gradually. When the valve according to the set water level is reached, supply of the water is stopped, and washing is started. Rotation is stopped when the core 24 has come in mating with the sensing coil 25 in the water level sensor 23. The water discharged from the wash at the time of dewatering is allowed to flow along the tapered parts 12, 13 of the trough 9 and stored in a pocket 11, and then is discharged to outside the machine through a water discharge mechanism 16 leading to the part where the pocket 11 exists.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) TECHNICAL FIELD The present invention relates to a single-tank type dehydrating and washing machine.

(Prior art) Conventionally, a washing machine with a dehydrating function has a dual tank of an inner tank and an outer tank.Washing is carried out in the inner tank, and water that is shaken out from the inner tank during spin-drying is transferred to the outer tank. The water is drained by υV by means of a drainage machine) +'4 connected to the outside of the machine from the outer tank. However, this product requires a double tank, which increases the cost of the product, and the inner tank is porous, through which water can be stored in both the inner and outer tanks. However, the disadvantage of this method is that it requires a large amount of water, making it less economical to use.

Therefore, in recent years, it has been considered to have a single tank, so that washing is carried out in a large tank, and an outer box receives the water that is shaken out from the tank during spin-drying. In this case, in addition to the tank, various mechanisms including a motor are arranged inside the outer box, and it is necessary to prevent these mechanical parts from getting wet.

For this reason, a partition wall is provided inside the outer box to separate it into a part where the tank described above is installed and a part where the machine 11117 section is installed, and the partition wall also separates the mechanism part and the tank. A large waterproof bellow is installed in the connecting part.

(Problem to be solved by the invention) Even with the above-mentioned products, the structure was complicated due to the partition walls and large waterproof bellows, and it was not possible to reduce the product cost. .

Also, in the previous model, when powdered soap is used as a detergent, there are many places where soap scum is deposited, such as on both the inside and outside of the inner tank and the inside of the outer tank, or on both the inside and outside of the tank and the inside of the outer box. Therefore, when rinsing after washing, the soap scum often leaves the area and sticks to the laundry.
This often impairs the washing effect.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to not only reduce the amount of water used, but also to sufficiently reduce the product cost, and to eliminate soap scum after using powdered soap. To provide an excellent dewatering and washing machine which can prevent the problem of adhesion to laundry as much as possible and can also reliably detect the water level stored in a tank in itself.

[Structure of the Invention (Means for Solving the Problems) The dehydrating/washing machine of the present invention has an outwardly projecting pocket section somewhere from the bottom to the top end, and a pocket section in another section. The machine has a tapered part that gradually increases in diameter toward the outside of the machine, and is provided with a tank that washes the laundry stored therein together with washing water and is rotated during dewatering, and from the part of the tank where the pocket part exists outside the machine. a water level sensor for detecting the tank water level in accordance with the expansion and contraction of a diaphragm provided at the bottom of the tank due to changes in the tank water level; It is characterized in that it includes a position sensor that detects the rotational position of the tank so as to stop the tank at a position where the sensor functions.

(Function) According to the above means, water to be discharged from the tank during dewatering is collected in the pocket along the taper section of the tank, and is discharged to the outside of the machine through the drainage mechanism.

As a result, there is no need to receive water in an outer tank or outer box. Furthermore, although the water level must be detected directly from the tank, the tank can be stopped at a rotational position where the water level sensor functions using a position sensor, and the water level can be detected at that position, so the water level can be detected reliably. can be done.

(Example) An example of the present invention will be described below with reference to FIG.

In the figure, first, reference numeral 1 is an outer box, inside which a mechanism section 2 is supported and disposed by a hanging rod 3, a spring 4, and the like. The mechanism section 2 has a hollow dehydrating shaft 5 in its center, and a washing shaft 6 is inserted into the dehydrating shaft 5. In addition, there is a motor (not shown) in the mechanism section 2, and its power is used to rotate the washing shaft 6 in forward and reverse directions during washing, and to rotate the dehydration shaft 5 together with the washing shaft 6 at high speed in one direction during dehydration. A control device 8 is disposed in the operation box 7 on the outer box 1 to control the operation.

Reference numeral 9 denotes a tank disposed above the mechanism section 2 in the outer box 1, and specifically includes a tank lower part 9a forming a flat container shape equivalent to the bottom plate and a tank upper part 9b occupying the other parts. , for example, is formed by lava 10, and the lower part 9a of the tank has a larger diameter than any other part of the lower part 9b, and a pocket part 11 that extends outward is formed around it. A tapered part 12 whose diameter gradually increases toward the pocket part 11 is formed in the inner part, and the center part is placed on the upper end of the dewatering shaft 5. On the other hand, the tank upper part 9b has the pocket portion 11 in the entire area from the upper end to the lower end.
It forms a tapered portion 13 whose diameter gradually increases toward the top, and a balancer 14 having a liquid-filled structure, for example, is provided at the upper end. Reference numeral 15 denotes a rotating body disposed at the inner bottom of the tub 9, which also has the shape of a flat container, and its center portion is fixed to the upper end of the washing shaft 6.

16 is a drainage machine (one unit, which is the dewatering shaft 5)
A drain port 18 is provided in the upper part of the tank 9 so that the inside communicates with the inside of the tank 9 at a portion above the seal 17, and a water passage hole 19 is provided in a part of the peripheral wall of the drain port 18. Hole 1
9, a water receiving ring 20 watertightly and rotatably surrounding the peripheral wall of the drain port 18, a drain valve 21 communicating with the water receiving ring 20, and a drain valve 21 communicating with the drain valve 21 outside the outer box 1. It consists of a drain hose 22 led out, and in short, it communicates from the inside of the tank 9 to the outside of the machine.

On the other hand, 23 is a water level sensor, which also consists of a core 24 made of a magnetic material such as ferrite, and a detection coil 25 paired with the core 24.
4 is attached to a diaphragm 27 pasted on the outer lower surface of a hole 26 formed in the bottom surface of the lower part 9a of the tank 9 so as to close the hole 26, and the detection coil 25 is attached to the The core 24 and the detection coil 25 are configured to face each other vertically by being attached to a first support 28 provided in the mechanism section 2.

Further, 29 is a position sensor, which is, for example, a magnet 30.
and a Hall element 31, the magnet 30 is attached to the outer lower surface of the tank lower part 9a of the tank 9, and the Hall element 31
is provided in the mechanism section 2 together with the first support body 28.
By attaching the magnet 30 and the Hall element 31 to the support body 32, the magnet 30 and the Hall element 31 are arranged to face the upper side.

Note that when the magnet 30 and the Hall element 31 are aligned in the position sensor 29, the core 24 and the detection coil 25 are aligned in the water level sensor 23 as well. Further, in both the sensors 23 and 29, 33 and 34 are lead wires for taking out respective detection signals.

Now, in the case of the apparatus configured as described above, when the operation is started, water is first supplied to the tank 9. Therefore, the water is stored in the tank 9 and the water level is raised, and as the water level rises, the diaphragm 27 that receives the weight of the water gradually expands. Also, at this time, the tank 9 is maintained at a position where the rotation is stopped when the magnet 30 and the Hall element 31 are aligned with each other by the position sensor 29, so that the core 24 of the water level sensor 23 is positioned at the detection coil 25. are combined. Therefore, when the diaphragm 27 expands as described above, the core 24 attached to the diaphragm 27 of the water level sensor 23 gradually approaches the detection coil 25. Therefore, the inductance of the detection coil 25 changes gradually, and when the change in inductance reaches a value corresponding to the set water level, water supply is stopped and washing is started.

Then, as mentioned above, the washing shaft 6 is rotated in the forward and reverse directions.
Correspondingly, the rotating body 15 fixed to the washing shaft 6 is also rotated forward and backward. However, at this time, if the laundry is thrown into the tub 9, it is located on the rotating body 15, so
The laundry positioned in this way is placed in the washing water in the tub 9 by the rotating body 1.
Washing is carried out by shaking the washing machine.

When draining water, the drain valve 21 is opened, and the washing water in the tank 9 flows out of the machine through the drain mechanism 16 of the drain port 18 - water passage hole 19 - water receiving ring 20 - drain valve 21 - drain hose 22. is discharged.

Furthermore, during dehydration, as the dehydration shaft 5 is rotated at high speed in one direction together with the washing shaft 6, the tank 9 fixed to the dehydration shaft 5 is also rotated at high speed in one direction together with the rotating body 15. The washing water contained in the washed and drained laundry is discharged by centrifugal force, and the discharged water then flows along the tapered portion 12, 13 of the tub 9 and its inner surface toward the pocket portion 11. It flows, reaches the pocket 11, and is collected there. When such dewatering is completed, the water stored in the pocket section 11 is discharged from the drain port section 18 to the outside of the machine through the drain mechanism 16.

Further, at the end of this dehydration, the tank 9 stops rotating when the magnet 30 and the Hall element 31 match with each other according to the position sensor 29, or in other words, when the core 24 and the detection coil 25 match with each other according to the water level sensor 23. - to be done.

As described above, according to this embodiment, the water shaken and discharged from the laundry during spin-drying is made to flow along the tapered portions 12 and 13 of the tub 9 and stored in the pocket portion 11.
Since the water is discharged to the outside of the machine through a drainage mechanism 16 leading to the area where the water is present, it is not necessary to receive water in the outer tank as in the past, and it is also necessary to receive water in the outer box 1. do not. Therefore, the outer tank can be made unnecessary, and the conventional partition walls and large bellows etc. can be made unnecessary to be provided inside the outer box 1, thereby simplifying the structure. It is possible to achieve lower product costs. Further, in this case, during washing, the washing water is only stored in the tub 9, and therefore the amount of water used can be reduced. In addition, when powdered soap is used as a detergent, soap scum is deposited mainly on the inner surface of the tank 9 in this embodiment, but also on the outer surface of the tank 9, the inner surface of the conventional outer tank, and the inner surface of the outer box 1. Therefore, it is possible to reduce the possibility that the soap scum leaves the place where it is attached and attaches to the laundry after rinsing, and the washing effect can be obtained as well as possible.

Also, as a result of the above procedure, the detection of the water level stored in the tank 9 must be performed directly from the tank 9; ! 19 is stopped at the rotational position where the water level sensor 23 functions by the position sensor 29 at the end of spin-drying, and the water level can be detected at that position for the next wash, so the water level can also be detected reliably. .

Incidentally, washing can be carried out by, for example, rotating the tub 9 forward and backward, instead of by rotating the rotary body 15 in the same direction as in the above embodiment, so the rotary body 15 is not necessarily required. Further, the pocket portion 11 is not limited to being provided at the bottom of the HJ 9, but may be provided anywhere from the top end to the bottom of the tank 9. Furthermore, water level sensor 2
3 is sufficient as long as it can detect the water level stored in the tank 9 according to the expansion and contraction of the diaphragm 27. In addition to the magnetic type, other types such as optical type can be considered, so the core 27 described above may be used. and the detection coil 25. Further, in this case, the position sensor 19 is also similar, and is not limited to being composed of the magnet 30 and Hall element 31 described above.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate changes within the scope of the invention.

[Effects of the Invention] As is clear from the above description, the dehydrating and washing machine of the present invention has an outwardly projecting pocket section somewhere from the bottom to the top end, and the pocket section is located at another section. The machine is provided with a tank having a tapered part whose diameter gradually increases toward the outside of the machine, in which laundry stored together with washing water is washed inside the machine and rotated during dehydration, and the part of the tank where the pocket part exists is removed from the machine. a water level sensor for detecting the tank water level in accordance with the expansion and contraction of a diaphragm provided at the bottom of the tank due to changes in the tank water level; Place the tank in the position where the sensor functions! - It is characterized by being equipped with a position sensor that detects the rotational position of the liquid tank as much as possible, thereby reducing the amount of water used and achieving a sufficient reduction in product cost. To minimize the problem of adhesion of soap scum to laundry after using powdered soap, to obtain good washing effect, and to also be able to reliably detect the water level stored in the tank in the washing machine. It has the excellent effect of being able to.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing one embodiment of the present invention. In the drawings, 9 is a tank, 11 is a pocket portion, 12 and 13 are tapered portions, 16 is a drainage mechanism, 23 is a water level sensor, 27 is a diaphragm, and 29 is a position sensor. Applicant: Toshiba Corporation

Claims (1)

[Claims] 1. Laundry that has an outwardly protruding pocket somewhere from the bottom to the top and a tapered part that gradually increases in diameter toward the pocket in another part, and is stored together with washing water. The washing machine is equipped with a tank that is rotated during dehydration and a drainage mechanism that drains water from a portion of the tank where the pocket portion is located to the outside of the machine. a water level sensor that detects the tank water level in response to expansion and contraction of a provided diaphragm as the tank water level changes, and a position sensor that detects the rotational position of the tank to stop the tank at a position where this water level sensor functions. A dehydrating and washing machine comprising: